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Finding the Fourth Proportional to 83,133.60, 124,700.40 and 49,891.20

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Solution

The fourth proportional to 83,133.60, 124,700.40 and 49,891.20 is: 74,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,133.60 : 124,700.40 = 49,891.20 : x
  2. Step 2: Convert to fraction form
    83,133.60/124,700.40 = 49,891.20/x
  3. Step 3: Cross multiply
    83,133.60x = 124,700.40 × 49,891.20
  4. Step 4: Simplify right side
    83,133.60x = 6,221,452,596.48
  5. Step 5: Solve for x
    x = 6,221,452,596.48/83,133.60
  6. Step 6: Final answer
    x = 74,836.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.